Our investigation included interior and exterior surveys, water tests, exploratory openings, and laboratory testing of concrete samples. SGH determined that the plaza damage was due primarily to setting bed deterioration related to a lack of a drainage layer at the waterproofing level. The waterproofing system was replaced as part of the comprehensive reconstruction that also included localized concrete repairs.
Working in collaboration with the landscape architect, SGH prepared waterproofing and structural repair design documents that incorporated their redesign of the outdoor terrace spaces. We evaluated the impact of these changes on the existing concrete structure.
SGH worked with the owner and construction manager to develop construction phasing that would limit the disruption to building occupants. We provided construction administration services and observed the as-built work throughout construction for comparison with the design intent.